Hover with your mouse over the name of the column where you want to upload your exam scores (See, Fig. 1)

Fig. 1, Column name in Canvas

While hovering over the column name you will see a web address show at the bottom left hand corner of your web browser.

This web address will end with a 5 digit number (See, Fig. 2). Write down, or save, this 5 digit number.

Fig. 2, web address of Canvas column

Open the .CSV file from the ARC.

The top section of the .CSV file should have these column headers and points possible area (See, Fig. 3).

Fig. 3, .CSV file columns

Delete "PT2 (Student Scores)" from the F1 Cell in the spreadsheet.

Replace "PT2 (Student Scores)" with the name of your desired column and the 5 digit number from the web address (Ex. Exam 1 (19537) (See, Fig. 4).

Fig. 4, Exam 1

Save your .CSV file.

Next, Import it into your Canvas grade book

Click the Import button in the upper right-hand corner of your grade book (See, Fig. 5)

Click Choose File to browse your computer for your .CSV file.

Click Upload Data.

Fig. 5, Import button in Canvas grade book

NOTE!!!In order for your grades to upload into Canvas the student number and the first/last name of the studentMUST BE CORRECT.
If you have a student that has not filled in their information
correctly it WILL NOT RESOLVE and will NOT BE UPLOADED without
prompting. Scroll through your .CSV file and note any that have missing
informationIf Canvas can't find a match, a window will pop up
upon import that will ask you to select the student the score belongs to
based on the closest match that is available.

If you have unresolved data you will get a screen that looks like the following (See, Fig. 6)

Fig. 6, Unresolved Data in Canvas grade import

Choose from the drop down the correct student name or choose to skip that entry.

Then, Click Continue.

Canvas will then show all of the grades that will be uploaded into the grade center.

Click Save Changes.

A pop up window will appear letting you know that the process will continue to run in the background and that you may leave the window (See, Fig. 7). It may take up to 10 minutes for the scores to populate in your grade center.

Click OK. After you click OK you may navigate away from the screen.Fig. 7, Canvas pop up window